Pedal-control liquid mixer



w, MEIER.

PEDAL CONTROL LIQUID MIXER. APPLICATION FILED 0cT.25, 1919.

Patented May30, 1922.:

2 SHEETS-SHEET I. 7

WI T/VE 88E 8 d/adI/m/MQM IN VE/V TOR MAL/AM ME/EE A TTORNEVS W. MEIER.

PEDAL CONTROL LIQUID MIXER. APPLICATION FILED ocT.2s. 1919.

1,41s,1 93. Patented May 30, 1922.

2 SHEETSSHEET 2.

W/TlI/ESSES INVE/VTOI? A TTOR/l/EVS ,5 by the foot.

WILLIAM MEIER, or NEWYonK, N. Y.

PEDAL-CONTROL LIQUID MIXER.

Application filed October 25,1919, Serial No. 333,151.

To all whom it may concern:

Be it known that I, YVILLIAM MEIER, a citizen of the United States, and a resident of New York, in the county of New York and State of New new and Improved Pedal-Control Liquid Mixer, of which the following is a full, clear, and exact description. This invention relates generally ,.to'.;a liquid mixing means, and more particularly to an improved device for mixinghot and cold water, which means maybe controlled by a foot pedal whereby hot and cold, water. may be readily mixed in proper proportions to obtain and maintain a desiredtemperature. n v A device of this haracter is particularly adapted for use by dentists and others, who, while working with their hands,..may desire to controlthe flow and temperature oi? the water without the necessity of interrupting the work in hand. This may be. readily accomplished by'the use of a pedal control liquid mixer. character is particularly adapted for .,use under sanitary conditions, where itisde sired to control the flow and temperature of water, without theuse of the hands. One of the objects oithis invention is to provide in a liquid mixer, a means of si1nple and compact construction'whereby :the temperature and flow of a liquid may be controlled by a pedal whichm'ay be actuated A further object of this invention is to provide in a hot and. cold water mixer, a construction which willfpermit the mecha nism of the mixer to be actuated by the foot, and held in any predetermined position; whereby a desired temperature is tain ed, without the necessity of having to hold the foot on the actuating mechanism...

Still a further object of this invention vis to provide in apedal-actuated device t-or the temperature of a hot and cold water mixer, a simple and compact construction which will permit the water flow to be readily shut off without having to controlling use the-hands.

'. With the above and other objects in view, the invention consists inthe construction, arrangement and combination of parts here inafter more fully described, and-more particularly set forth in the appended claims.

In the drawings, showing for example a York, have invented a example, having Further, a device of this,

practical embodiment of the invention, similar characters of referencedesignate cor responding parts in theseveral views.

Figure 1 is a longitudinal sectional view showing certain parts in elevation, looking in the direction of the arrows and taken on the line l1 of Figure 2.

Figure 2 is an elevation view, partlybroken away, showing more clearly the construction of the pedal mechanism for con-- trolling. the movement oi the liquid mixer. -Figure 3 is a broken sectional view look ing infthe direction of the'arrows and taken onthe line 3-.3 of Figure 2. In thedrawings, showing, for example, one of the practical embodiments of the invention,

members 10 and 11, one of which, 10, for

a toothed or ratchet surface lQthereon. One end13 of the member 10 is 'pivotally connected in any suitable manner to-a support, which in the form ShOWIllS the base 14 of a water mixer hereinafter more fully described. The other relatively imovablenmember 11 is held in sliding engagement with the toothed memberflO, a pawl 15- being arranged uponthe member 11 so as'to engage the teeth 12, a spring .16. being provided .to normally hold the pawl in yielding engagement with the toothed surface,

Fixed. to the member 11 and extending outwardlytherefrom, isa pedal 17 ,which is, adapted to receive the foot in order to cause relative movement between the members l0 and 11. With reference to Figs. 2 and 3, the pawl 15 is carried on a pin 18 which is rotatably supportedin a bracket 19, ,fix'e'd' to the foot pedal 17 and extends laterally thereof. One end of the pin extends outwardly from, thepedal and a supplemental pedal 20 is fixedthereto, the end of said pedal 20 being so arranged as to be normally above the foot pedal 17. It is thus seenthat if it is desired to .move the foot pedal 17 downward, the foot is placed thereon .and the pedalis pressed downward ,to the desired .themembers-willbeheld byengagement of ,the spring-pressed pawl 15 with the toothed surface 12; g .1111 the form shown in 11 is tubular in. form and fits over or telescopes the member 10, an openingf21being Fig;- 2, the member position, in' which position i the pedal-control mechanism comprises a plurality of relatively movable any suitable manner provided in order that the pawl may contact with the toothed surface 12. The upper end of the member 11 is pivotally connected to one end of a link member 22, by a pin 23,,

-mounted on a cap of the liquid mixer.

Connecting the cap 25 and the base 14 and interposed therebetween, is a body 26, which I may be of any'suitable form, but is shown in able I nection at its lower the drawings as comprising a tubular casing having a threaded connection at its upper end to receive the cap 25,'and athreaded conend to receive the base 14. The body 26 is provided with inlet openings 27 and 28, to receive hot and cold water inlet pipes 29 and 30, respectively. The body 26 is also provided with another opening 31 to receive an outlet pipe 32.;

As a means of controlling the flow of waterthrough the hot and cold inlet pipes, gate valves 33 and 34, respectively, are provided. The said gates maybe provided with suitwashers 35 and 36, to form a seat for the inlet pipes 29 and 30, respectively. In the form shown, the; gates 33 and 34 are pivotally connected at one end thereof by a pin connection 37, to the base 14. Asa means of controlling the movement of the' gates 33 and 34 to effect the cold water in the water flowing from the outlet may be controlled, a cam or inclined surface is formed at one side of each of the gates, and a gate-actuating member 38, mounted on a spindle 39, is'arranged to move between the said gates in order to obtain proper movement thereof.

In order to first obtain cold water and to gradually arrange the control so as to increase the temperature of the water until only 'the'hotflwater is obtained, the gate 34 controlling the cold water is provided with a V-shaped surface 40, and thatportion of the gate 33 corresponding to the upper portion of the V-shaped' surface' on the gate 34 is substantially parallel to the axis of the spindle 39, so that as the gate-actuating member 38 is moved downward to the pin 41, the gate-'33 willjremain seated, and the gate 34*will open, thus permitting the cold water to flow. Further downward movement of the gate-actuating member '38 will graduproper mixing of the hot and ally close the gate 34,- and, at the same time,

permit'the gate 33 to be unseated from the hot water inlet, the latter movement being effected by providing an inclined surface 42 on one-side of the gate 33. When the lowermost point 43- is reached by the gate-actuating member 38, the gate 34 will again be seated and the gate 33 will' be unseated, thus permitting a full fiow of hot water. In order to maintain the gate-actuating member order thatthe temperature of' inproper relative position and to guide the spindle 39, a guide stem 44 is fixed in a boss 45 of the base 14, the upper end of the stem. fitting within the lower end of the spindle 39. The upper end 46 of the spindle'ex tends outwardly of the water-mixing device and is guided. through a suitable bearing 47 and packing gland 48 of the cap 25.

' As a means of normally maintaining the gates in a seated position, a spring 49 is interposed between the base and the lower end of the spindle 39, one end of said spring being seated on the boss 45 and the other end on a collar 50 at the lower end of the spindle 39. By such an arrangement, in orderv to effect a mixing of the liquids, it is only necessary "to exerta downward force upon the spindle, to compress the spring 49, and as soon as the force is withdrawn, the gates will again automatically be reseated. It is to be understood that the invention is not to be limited to the water-mixing means shown herein, but is adapted to be used in connection with any" water-mixing devices having a hot and cold water supply in which a plurality of gates or valves are controlled by a spring-pressed spindle having a gateactuating member thereon.

As a means of communicatlng the movement of the foot pedal 17 to the spindle 39,

the upper end 46 of the spindle is connected in a suitable manner to the link 22. In the form shown, the upper end 46 of the spindle 39 is forked, and is provided with a pin 51,

which is guided in a slot 52 in the link 22.

sired temperature,-the foot be removed from the in such a position bythe engagement of the pedal with the toothed surface'l2. If it is desired to shut off the water supply, it is only necessary to place the foot upon the supple mental pedal 20, whichwill disengage the pawl 15 from the toothed surface 12, when the spring 49 will force the spindle 39 upward carrying the gate-actuating member 38 therewith, and the gates will again be seated. i I v It is to be understood that while one praoticalembodiment of the invention has been shown herein, various changes and modificaing from the spiritand scope of this invention. T

I claim:

1. In a device of the character described pedal and the latter will be held tions may be made thereof without departdle, a gate-actuating member mounted on to successively said splndle and arranged actuate said gates, a means connectlng to said s indle includin a edal a awl asso- P z: a

and a relatively movable toothed member adapted to cooperate with said pawl, whereby the said gate actuating member may be controlled by movement of said foot pedal.

2. In a having hot ciated therewith,

liquid mixer comprising a casing and cold water inlets therein, valve gates for said inlets, each of said valve gates having an inclined surface'thereon, a gate control'member, and a spring pressed spindle connected to said ber, one end of said spindle extending -out'- ward of the casing, a mechanism connected with the spindle and adapted to be actuated by the foot to control the movement of the said gates, whereby the temperature of the liquid may be regulated.

3. In a liquid mixer comprising a casing having hot and cold water inlets therein, valve gates for said inlets, each of said valve gates having an inclined surface thereon, a gate control member, and a spring pressed spindle connected to said gate control mem-' her, one end of said spindle extending outward of the casing, a mechanism connected with the spindle and adapted to be actuated by the foot to control the movement of the said gates and to hold the same in any predetermined position.

4. In a hot and cold water mixer-including a casing and a spring pressed water inlets, valve gate control mem-,

spindle having one end thereof extending outward of said casing, a foot control mechanism comprising av foot pedal, a toothed ratchet member pivotally mounted, a means for holding said ratchet member in sliding engagement with said pedal, a spring pressed pawl mounted on said pedal, and adapted to engagesaid ratchet, and a means connecting the pedal and the spindle, whereby the said spindle may be actuated by pressing the pedal.

5. In a hot and cold water mixer including a casing, and a spring pressed spindle having one end extending from said casing, afoot control means for controlling the movement of said spindle, and a means for holding said last named means in a predetermined actuated position.

6. In a hot and coldwater mixer including a casing, and a spring pressed spindle having one end extending from said casing, a foot control means for controlling the movement of said spindle, and a means for holding said last named means in a predetermined position, the said foot control. means including a foot pedal, a vertically extending member pivotally mounted, another vertically extending member connected to,

the pedal, and adapted to telescope said pivoted member, and a link having one end thereof pivotally mounted at a fixed support, and the other end thereof connected to the said. second named telescoping member, the said link member having a connection with thespindle whereby when the foot pedal is pressed, the said spindle will be actuated.

WILLIAM MEIER. 

